Fundamentals of Formation and Excretion of Urine: A Pictorial Review

Abstract

Via a pictorial review, we will discuss the complex anatomy and important function of the kidney as it relates to urine formation and excretion. We will introduce the anatomy and function of the renal lobe and review the histology of the renal cortex and medulla, renal tubule, renal papilla, and renal pelvis. We will discuss renal filtration capacity and review the pathway of renal excretion through the ureters, urinary bladder, and urethra.